Automatic fire-extinguisher.



G. W. BEGHTOLD. AUTOMATIC FIRE EXTINGUISHER.

APPLICATION FILED APR. 1. 1910.

Patented May 16, 1911.

ans.

UNITED STATES PATENT orr on.

enonen w. BnoHroLn, 'orinnsnY orrv, new JERSEY.

AUTOMATIC FIRE-EXTINGUISHER.

Specification of Letters Patent.

Patented May16, 1911.

Application filed April 1, 1910. Serial No. 552,926.

To all whom it may concern: 7

' Be it known that I, GEORGE W. BECHTOLD, a citizen of the United States, residing in Jersey City, Hudson county, and State of variations in pressure exerted against the valve,

the arms are heldtogether, resultin sometime in premature release of the valve and consequent damage by water. 0

It is the object of my invention to strengthen the union between the lever arms to enable them to resist variations or excess of pressure exerted upon and by the valve, without decreasing the sensitiveness of the releasing device to heat, thus guarding against premature or accidental flooding.

. The invention consists in the specific con- I struction and arrangement of parts hereinafter described and claimed, adistinguishing feature being the use of a bifurcated key which straddles a spine on one lever arm to which the key is soldered, and which bears against a return bend on the other lever arm, whereby the lever arms. are positively locked together until the bifurcated key is released by the melting of the fusible material.

In the accompanying drawings, Figure 1, is a side elevation of an automatic fire sprinkler provided with my improved strut or valve-support; Fig. 2, a top view of same; Fig. 3, a central vertical section; Fig.

' 4, a bottom View; Fig. 5, a transverse section upon plane of the line 5- 5-'-'Fig. 2; Figs. 6 and 7, detail views of the return bend lever arm; Figs. 8 and 9, detail views-of the key lever arm; Fig. 10, an isometrical view of the key.

The valve seat, posts, deflector, &c.,are of well known construction, my invention relating only to. the strut or valve support S, interposed between. the valve 0, and the such variations tending constantly to disintegrate the fusible material by which- ,ing for or or variations of pressure exerted upon and 100 tremity opposed bearing Z). The strut or valve support S, consists of the two leverarms s, and s, the key 76, and the fusible material f,- and by the term fusible material as herein used, I mean to designate, any metal, solder alloy, composition or substance adaptable to the purpose and fusible at a sufiiciently low temperature. The longer lever arm '8, is

formed with the bearing. toe 8 at its inner 5 extremity and at its outer'extremity with the return bend a. The shorter leverarm s,'is formed at its inner end with the beam ing toe s, and with the centrallongitddinal;

spine 8", on its outer side. 'It is also formed with the flat key seat 8, having the shoulder 8. p p

The contacting surfaces. of the lever arms 8, s, are soldered together, in the usual way and the key in; issoldered to the seat 8, and

shoulder 8 and reinforced thereon by external masses of solder f, or other fusible substance applied on both sides of the spine 8 and over'the bifurcated end of the key is,

which latter is formed with the slot is, per-- 30 mitting it to straddle the spine .9, of the lever arm 8. Thus as indicated in Fig. 5, fusible matter f, is used to unite the lever arms between the cont-acting surfaces aswell as on the bifurcated end of the key in, and the adjacent sides of the spine 8. The soldering of the key it, to its seat 8 s", and its reinforcement thereon 'by the solder applied to its bifurcated ends and to the sides of the spine 8, holds the other end 70 of the key- .90

in, rigid contact with the return bend s, of: the longer lever arm 8, until such time as the temperature'is suiiiciently high to melt the fusible material. Thus my bifurcated key is, performs an important function in that it positively locks the lever arms together at ordinary temperatures, or below: a prescribed degree of heat, thereby compensatneutralizing and resisting excess by the valve 1;. 7 l What I claim as my invention and desire to secure by Letters Patent is,

In an automatic fire extinguishen; a valve support comprising two lever arms having bearings arranged in an axial line, sai

lever arms extended radially and'united beyoud the axial line of said bearings, one lever aim being longer than the other and formed with a bearing toe at itsinner ex- I and a return bend at its outer extremity to-form a rest for a key, the shorter lever arm being formed at its inner extremity With a toe, with a central longitudinal spine on its outer side and With a flat key seat and a shoulder adjacent thereto, and a key held between the end of the upper arm and the said shoulder and engaged horizontally between said key seat and the rest on the return bend, said key being soldered to said seat and having a slot straddling said spine and engaging said shoulder, and 10 fusible material uniting the key and seat and reinforcingsaid seat and key to hold the outer end of'the key in rigid contact with the rest on the return bend.

GEORGE W. BEGHTOLD. Witnesses:

G120. 7M. Mmrr, D. W. GARDNER. 

